_:n96a0e2e4db1d4c898b206f2e66346bd8xb0
<http://schema.org/description>
"A list\n[https://www.technologyreview.com/2019/02/27/136886/ten-recent-low-tech-inventions-that-have-changed-the-world/] \nof low tech inventions over the last few decades that have changed the world. I\ndidn&#x27;t realize oral rehydration salts were a relatively recent invention:\n\n&gt; By the early 1990s, diarrheal diseases were killing some 5 million children\nunder the age of five every year. That number is down to about 1.5 million,\nthanks to oral rehydration salts—a mixture of salt and sugar that can "
<https://apoorvupreti.com/recent-low-tech-inventions/>